White-wash is made by pouring water on cakes of whiting, and stirring until the liquid is like a thin cream, when a small quantity of warm size or dissolved glue is then added, to prevent the colour from rubbing off when dry. White-wash is applied with a broad, flat brush, working in a uniform direction up and down the wall. It is requisite first to remove the dirt and the old white-wash by washing it away with a brush and abundance of clean water.